Looking for an o2 emulator

[LEWETHETIGER73]

Does anyone know where I can find an o2 emulator for sale locally? Or is this an internet only thing. I would even buy I used one if it works!

[LIL EVO]

I make them. $75. It slowly pulses a .60-.70 signal

[lilws6]

I used to have a set I gave to someone on here. other than lil evo I don't know anyone local that has them